Hi, not sure if you still need help or not.
This burial process is done for the Maltese people also, the reason being that there is not enough space on the island for everyone to have full burial plots. When my grandfather passed away my uncle had to be there as a family representative for the exhuming process, no formal ceremony is needed.
In each family plot there contains the remains of many family members in much small caskets, essentially containing there bones and anything that might have survived decomposition, in my grandfathers case it was his nylon socks.
Yes, it is an unpleasant experience for the person voted to be the family representative, but also a nobel one.